Every Bambu spool reports an RFID identity — a spool id and a tag id, both
unique — so a printer's report can now keep the Filament page in step: a new
tagged spool is created, named and coded from the bundled filament list; one
already known is moved to its current slot; one you added by hand before the
printer was connected is adopted rather than duplicated; and one the printer no
longer reports is marked as taken out. It runs on "Save & test connection" and
every ten minutes in the background, still only reading from the printer.
Untagged spools are listed, not stored: without a tag, one spool of a colour is
indistinguishable from the next, so guessing would mean duplicates.
The planning is a pure function, tested against the cases that would cause
duplicates. The database side was exercised separately against a real
Postgres: three successive reports created, moved and unloaded spools as
intended, and a deliberate duplicate was refused by the partial unique index.
The amount left isn't taken from the printer yet: an AMS lite only reports full
or empty, so it's left blank until printers can say which kind of AMS they have.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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